Dziewa started his club career with
Śląsk Wrocław in the
I Liga. Aleksander Dziewa got MVP of Polish 1st League. With
Śląsk Wrocław, as one of the key players Dziewa helped defeat
Legia Warszawa 86:85 in extra time for the bronze medal match. The result superseded expectations. For this final game of the season, Dziewa praised the performance of both
Elijah Stewart and
Strahinja Jovanovic. On July 12, 2023, he signed with
Hamburg Towers of the
Basketball Bundesliga. He moved to Bundesliga after years of trying. Main key was 2022/2023 season in which he developed his 3pt shot under eye of polish development coach and assistant coach
Maksym Papacz. Dziewa increased his 3pt percentage by 8,3%. Averaged 32.5% (2020/2022) and 40.8% (2022/2023) On August 8, 2024, he signed with
Wilki Morskie Szczecin of the
Polish Basketball League (PLK). On August 13, 2025, he signed with
Benfica of the
Liga Portuguesa de Basquetebol. ==National team==